CO₂ Cascade / Transcritical System
CO₂ (R744) cascade and transcritical systems for ultra-low-temperature applications. Future-proof, GWP=1 refrigerant.
- Low-GWP · -50°C Service
- CO₂ (R744), high-stage HFC/HFO/NH₃
What The CO₂ Cascade / Transcritical System Does
CO₂ (R744) is the leading next-generation refrigerant for low-temperature industrial refrigeration. GWP = 1 (vs 3,922 for R404A), non-toxic, non-flammable, and not subject to F-Gas phase-down. Howcool builds CO₂ cascade systems where CO₂ is the low-stage refrigerant and HFC/HFO/NH₃ is the high-stage — ideal for blast freezers, IQF lines, and pharmaceutical -80°C applications.
We also build CO₂ transcritical booster systems for supermarket-style multi-temperature cold rooms, where a single CO₂ plant handles both medium-temp (+5°C) and low-temp (-30°C) loads. Bitzer Octagon CO₂ compressors, stainless-steel piping rated for 80 bar, and full safety/relief instrumentation.
CO₂ (R744) cascade and transcritical refrigeration systems for ultra-low-temperature applications. GWP = 1 next-generation refrigerant. Bitzer Octagon compressors, 80-bar stainless-steel piping. Reaches -50°C reliably.
Why Buyers Choose This Model
GWP = 1
CO₂ has 3,922× lower global warming impact than R404A. Future-proof against all F-Gas regulations worldwide.
Ultra-Low Temperature
Cascade configuration reaches -50°C evaporating temperature reliably. Standard refrigerant for blast freezers and IQF below -40°C.
Bitzer Octagon CO₂
Industry-leading CO₂-specific reciprocating and screw compressors. Stainless-steel piping rated for 80-100 bar working pressure.
Booster System Option
Single CO₂ plant handles both -30°C low-temp and +5°C medium-temp loads. Compact footprint, simplified installation.
Refrigeration Unit Failure Modes
Capacity that collapses in summer
High-ambient compressor selection with condenser heat rejection oversized for the site climate, not for a 35 degree lab rating.
Unplanned downtime
N+1 standby staging on parallel racks and multi-compressor packs keeps the room cold while a compressor is serviced.
Energy bills nobody budgeted
Multi-compressor and screw racks stage capacity to the real load instead of running one large machine at part load.
Technical Data
Values below are the manufacturer's standard range. Anything not listed is confirmed against your heat load calculation before order.
| Power Rating | 30HP – 500HP CO₂ stage |
|---|---|
| Refrigerant | CO₂ (R744), high-stage HFC/HFO/NH₃ |
| Compressors | Bitzer Octagon CO₂ reciprocating / screw |
| Min Evaporating Temp | -50°C (cascade) / -35°C (transcritical) |
| Working Pressure | 80 bar standard, 120 bar option |
| Piping Material | Stainless steel 316L |
| Heat Recovery | Available — 70°C hot water from gas cooler |
|---|---|
| Control | PLC with HMI, advanced CO₂ leak detection |
| Production Lead Time | 60-90 days after design freeze |
| Warranty | 5 years on compressors, 2 years on piping/vessels |
| Certification | ISO 9001, CE, PED 2014/68/EU |
| Origin | Beijing, China |
CO₂ Cascade / Transcritical System In Production And On Site
Sectors Using This Equipment
Food Processing
Processing lines do not wait. When freezing capacity falls behind the kill floor or the packing line, product queues at ambient...
Fruit and Vegetable
Fruit keeps respiring after harvest. Temperature slows it down; controlled atmosphere nearly stops it. The difference between the...
Cold Chain Logistics
A distribution cold store is judged on pallet movements, not on storage volume. Dock design, door speed and racking layout decide...
CO₂ Cascade / Transcritical System Questions
What capacity range does the CO₂ Cascade / Transcritical System cover?
The standard range is Low-GWP · -50°C Service. All models are customised to the calculated heat load of your room or line, so send volume, temperature and product type for exact selection.
What is the production lead time?
60-90 days after design freeze. Equipment is packed in export wooden cases.
What warranty applies?
5 years on compressors, 2 years on piping/vessels, backed by 24/7 remote support. On-site service is available for export projects.
Is the equipment certified?
ISO 9001, CE, PED 2014/68/EU. Howcool's quality management system is certified to ISO 9001:2015 by CFL Certification Center.
Often Specified Together
Monoblock Refrigeration System
Compact, all-in-one refrigeration system for small cold storage — fresh and frozen food products.
Hermetic Condensing Unit
Versatile unit with main control board, temperature control and operation board in one convenient package.
Semi-Hermetic Condensing Unit
Copper tube + aluminum fin air-cooled condenser OR high-efficiency shell-tube water-cooled condenser options.
Multi-Compressor Pack
Multiple compressors in parallel sharing discharge, suction, condenser and receiver for larger cooling capacity.
Facilities Built With This Equipment Family
2,000-ton Food Cold Storage Project
Hanbell screw parallel unit + PLC automation. 100mm PU panels with 40±2 kg/m³ density.
49,500m³ Food Cold Storage Solution
Large-scale multi-zone food cold storage. Turn-key design-build.
1,643 m² Controlled-Atmosphere Cold Storage
1,643 m²/5,749 m³ CA cold storage with 6 partitioned rooms and Hanbell screw parallel refrigeration system.
Request A Quotation For The CO₂ Cascade / Transcritical System
Tell us the room volume, target temperature and product type and we will confirm the model, capacity and delivered price.